/*
  Copyright (C) 2011, Kyungjoo Kim
  
  This file is part of LINAL (LINear ALgebra)
  
  All rights reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
  
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
  
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  Also add information on how to contact you by electronic and paper mail.
  
  
  Kyungjoo Kim
  iamkyungjoo@gmail.com
*/
#ifndef LINAL_OPERATION_GRAPHVIZ_HXX
#define LINAL_OPERATION_GRAPHVIZ_HXX


namespace linal {
  // ----------------------------------------------------------------
  // ** Graphviz
  extern void head_graphviz ( FILE *fp, char *name );
  extern void tail_graphviz ( FILE *fp );
  extern int  push_graphviz ( Hier_ A, int begin,
                              std::vector< std::pair<int,double> > &viz );
  extern void write_graphviz( FILE *fp, char *task, char *style, char *color,
			      std::vector< std::pair<int,double> > &in,
                              std::vector< std::pair<int,double> > &out );
  extern int lu_nopiv ( FILE *fp, int &start, int &end, Hier_ A );

}
#endif
